Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 SE CPU Cooler,
Updated August 2026 — Thermalright Assassin X 120R Digital ARGB Black wins on value for money, Thermalright Peerless Assassin 120 SE CPU Cooler, wins on cooling performa and build quality.
The Thermalright Peerless Assassin 120 SE offers superior cooling performance with more heat pipes and dual fans, while the Assassin X is more budget-friendly and aesthetically appealing.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Price
Assassin X is significantly cheaper at $22.90.
Fan Speed
Assassin X has a higher fan speed of 2000 RPM.
Aesthetics
Assassin X features digital ARGB lighting.
Why Thermalright Peerless Assassin 120 SE CPU Cooler, is better
Cooling Performance
Peerless has 6 heat pipes for better cooling.
Fan Configuration
Peerless uses dual 120mm fans for enhanced airflow.
Noise Level
Peerless operates at a lower noise level of 25.6 dB(A).
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black | Thermalright Peerless Assassin 120 SE CPU Cooler, |
|---|---|---|
| Max RPM | 2000 | 1550 |
| Noise Level | N/A | 25.6 dB(A) |
| ARGB | Yes | No |
| Heat Pipe Tech | AGHP | AGHP |
| Socket Compatibility | AM4/AM5, LGA1700/1150/1151/1200 | AM4/AM5, LGA1700/1150/1151/1200 |
Dimension comparison
Price Comparison
The Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler is priced at $22.90, while the Thermalright Peerless Assassin 120 SE CPU Cooler costs $49.99. This means the Assassin X is about 54% cheaper than the Peerless Assassin. For budget-conscious consumers, this significant price difference may make the Assassin X a more appealing option. However, it's essential to evaluate the features and performance of each cooler to determine if the lower price reflects a trade-off in quality or capability.
Cooling Performance
In terms of cooling performance, the Thermalright Peerless Assassin 120 SE boasts six heat pipes compared to the Assassin X's four heat pipes. The additional heat pipes of the Peerless design, utilizing AGHP technology, enhance its cooling efficiency. The Peerless Assassin’s dual 120mm PWM fans operate at a maximum speed of 1550 RPM, whereas the Assassin X's single 12cm PWM fan can reach speeds of 2000 RPM. While the Assassin X has a higher fan speed, the combination of more heat pipes and dual fans in the Peerless model typically results in better overall cooling performance, especially under heavy loads.
Noise Levels
When it comes to noise levels, the Thermalright Assassin X is designed with quiet operation in mind. Its fan features silicone corner pads aimed at reducing noise during operation. Although specific noise levels are not provided for the Assassin X, the Peerless Assassin maintains a noise level of up to 25.6 dB(A) at full speed. If silent operation is a priority, the Assassin X may offer a quieter experience, but without concrete noise specifications for comparison, it remains a subjective choice.
Aesthetics and Design
Aesthetic appeal is another area where the Thermalright Assassin X shines with its digital ARGB lighting, allowing for synchronization with other components through a 5V 3-pin motherboard connection. This feature not only enhances the visual aspect of your build but also adds a modern touch. Conversely, the Peerless Assassin does not emphasize RGB lighting but focuses on a robust design with dual towers for better cooling. Ultimately, the choice here depends on whether you prioritize appearance or a more muscular cooling structure.
Compatibility
Both coolers are compatible with a wide range of CPU sockets, including Intel LGA 1700, 1150, 1151, 1200, and AMD AM4/AM5. The Assassin X's height of 151mm is designed to fit most cases without sacrificing heat dissipation performance, making it a versatile option for many builds. The Peerless Assassin also comes with metal fasteners for various platforms, but users must ensure their case can accommodate its dimensions. Therefore, compatibility is a strong point for both coolers, but users should check their specific case dimensions before making a decision.
Installation Process
The installation process may vary between the two coolers. The Thermalright Assassin X includes a digital screen for monitoring, which requires a USB connection to the motherboard for power and data transmission. This could complicate the installation for some users who may not be familiar with such setups. The Peerless Assassin, on the other hand, comes with all necessary mounting hardware and is designed to be user-friendly, particularly for AMD installations, as it utilizes the motherboard's built-in backplane. This simplicity may appeal to those who prefer hassle-free installation.
Brand Reputation and History
Thermalright has over 20 years of experience in the cooling market, establishing itself as a trusted brand among PC enthusiasts. Both the Assassin X and Peerless Assassin have garnered attention for their performance and reliability. While there are no specific sales ranks provided, the longstanding reputation of Thermalright suggests that both products are well-regarded in the community. This history may provide additional peace of mind for buyers concerned about the longevity and effectiveness of their cooling solutions.
Which should you buy?
The decision between the Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler and the Thermalright Peerless Assassin 120 SE CPU Cooler ultimately hinges on your specific needs and preferences. If you’re looking for a budget-friendly option with potential quieter operation and aesthetic appeal, the Assassin X at $22.90 could be the way to go. However, if superior cooling performance and efficiency are your primary concerns, the Peerless Assassin, despite its higher price of $49.99, offers more heat pipes and dual fans that generally provide better thermal management. Consider your priorities—whether it's price, performance, or aesthetics—to make the best choice for your build.

